Safety device for mine-elevators.



J. K. WILLIAMS.

SAFETY DEVICE FOR HIRE ELEVATORS.

APPLICATION FILED APB. 29,1900.

927,440. Patented July 6, 1909. r 2 SHEETS-SHEET 1.

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SAFETY 11mm 17011 mun ELEVATORS.

APPLIOATIOH TILED AER. 29.1908.

Patented July 6, 1909.

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UNITED STATES PATENT OFFICE.

JOHN K. WILLIAMS, ()F NANTIGOKE, PENNSYLVANIA, ASSIGNOH OF ONE-HALF TOJOHN WASHGOFSKI, OF NANTIGOKE, PENNSYLVAN IA.

SAFETY DEVICE FOR MINE-ELEVATORS.

Specification of Letters Patent.

Patented July 6, 1909.

To all whom it may concern:

Be it known that I, JOHN K. WILLIAMS, a citizen of the United States,residing at Nanticoke, in the county of Luzerne and State ofPennsylvania, have invented certain new and useful Improvements inSafety Devices for Mine-Elevators; and I do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it ap ertains to make anduse the same.

y invention relates to safety devices for mining elevators and theobjects of my invention are to furnish a device that will prevent byautomatic means a mining cage or elevator from being thrown over thesheave at the head of the shaft through the negligence or forgetfulnessof the engineer in charge b operating an automatic means to detach t ecable from the cage and other improvements which will be shown fartheron in the specification. I secure these results by the mechanism shownin the accompanying drawing, in which,

lgure 1 is an elevation. Fig. 2 a section on the line 22 of Fig. 1. Fig.3 is a vertical section showing the eye-bolts and latch-attachments, andFig. 4 is a plan of the latch.

Similar characters refer to similar parts throughout the severalfigures.

In the drawings, Fig. 1 shows the upper part of a mining shaft with itscage. 1 represents the landing of the shaft and 2 the converginguprights of its frame. 5 re resents the sills of the cage of which 6 isthe 001' and 7 upright posts having a cross-bar 8 carrying guiding ends99. 33 are guide-rails for the cage and 11 is a diagonally placed pieceof flat iron whose object is to deflect the lever 24 for a pur ose whichwill be hereinafter explained. ivoted to brackets 2121 on the uprights 3by a pivot 27 are two levers 18-18, the upper ends of which aredeflected and move in slots 22 in the uprights 3. The upper ends of thelevers 18 protrude into the shaft in a way that will cause the risingcage to impinge upon them and operate them to force inwardly theU-shaped sills 19-19 which reciprocate in broad bearings 2020 on eitherside of the shaft as best shown in Fig. 2. It is apparent that thisdevice when the cage ascends and forces the ends of lever 18 outwardly,will automatically cause the U-shaped sills to move under the cage andthus prevent it from falling.

On the top of the cage, fastened to a crossbar 8 by eye-bolts 32 is ahasp 30 having upwardly bent ends 31.

A latcl'i-piece 36 illustrated in Fig. 4, and having lrm 'itudinallyextended pintles 35 is placed on the hasp 80 in such a position that itspintles 35 may engage with the eyelets 33, and also with chain-links 33.The latch is kept in engagement with the eyelets, and the chains by thepressure of a spring 37 impinging against a turned-up portion 31 of thehasp.

In some mining regions, as in Pennsylvania, the law requires pluralchain fastening and Fig. 3 represents plural chains fixed to a car orcage with my device.

The operation of my device is as follows As the cage ascends in theshaft the lever 24 comes in contact with the diagonal barl land is bentoutward and pivoting on the screw 25 engages the latch by means of aloose bolt 10 in the hole 10 in the latch. As the latch moves laterallythe pintles will move outward from the chain-links 33, and the chain isdisengaged. The cage would descend were it not that the automaticappliances for passing the sills thereunder have already acted, whichserves to firmly support the cage.

It is not necessary that the levers should be attached to the guides,but the may be otherwise attached, the important feature being that theyshould be operated by the rising cage and should move the sillsthereunder.

The cage, of course, may be equipped with the ordinary safety apphancesintended to check the fall of the carriage, and my device is anadditional preventive means.

What I claim is 1. In a cable detaching device for elevator cars, areciprocating device carrying a series of pintles, eye bolts adapted tobe carried by the car, and means arranged to be connected with the cableprovided with apertures adapted to register with the eye bolts, saidpintles enga ing said apertures and eye bolts.

2. In a ca le detaching device for elevator cars, a reciprocating devicecarrying a series of pintles, a sprin for operating said device, eyebolts adapte to be carried by the car, and means arranged to beconnected with the cable provided with apertures adapted to registerwith the eye bolts, said pintles engaging said apertures and eye bolts.

3. in a cable detaching device for elevator cars, a longitudinallyreciprocating frame carrying pintles, eye bolts adapted to be carried bythe ear, and means arranged to be connected with the cable and providedwith apertures adapted to register with the eye bolts, said pintlesengaging such apertures and eye bolts.

4. 111 a cable detaching device for elevator cars, guiding devicescarried by the car, a longitudinally movable frame operating between theguides and carrying pintles, said pintles projecting in the direction ofmovement of the frame, a spring bearing against said frame, eye boltsadapted to be carried by the ear, U-shaped devices provided withapertures arranged to be connected with the cable, said aperturesregistering with the eye bolts, and an operating lever pivoted to thecar and to the movable frame.

In testimony whereof I. a'llix my signature in presence of twoWitnesses.

J OIIN K. WILLIAMS. Nitnesses:

JonN WASHOOFSKI, W. J. TREMBATII.

